﻿// Copyright (c) 2008, Colin Burn
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 
// * Neither the name of WTCL nor the names of its contributors may be
// used to endorse or promote products derived from this software
// without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace WTCL.Data.Type
{
    public struct TimeDataType : IDataType<DateTime, TimeSpan>
    {
        private DateTime value;

        public TimeDataType(DateTime value)
        {
            this.value = value;
        }

        public bool Equals(IDataType<DateTime, TimeSpan> data)
        {
            return this.value.Equals(data.Value);
        }

        public IDataType<DateTime, TimeSpan> Abs()
        {
            return this;
        }


        public IDataType<DateTime, TimeSpan> Add(TimeSpan value)
        {
            return new TimeDataType(this.value + value);
        }

        public IDataType<DateTime, TimeSpan> Sub(TimeSpan value)
        {
            return new TimeDataType(this.value - value);
        }

        public TimeSpan Sub(IDataType<DateTime, TimeSpan> value)
        {
            return this.value - value.Value;
        }

        public double GetRatio(IDataType<DateTime, TimeSpan> min, IDataType<DateTime, TimeSpan> max)
        {
            long assumedMin = min == null ? 0 : min.Value.Ticks;
            long assumedMax = max == null ? 0 : max.Value.Ticks;

            return 1.0 * (this.value.Ticks - assumedMin) / (assumedMax - assumedMin);
        }

        public bool LessThanOrEqual(IDataType<DateTime, TimeSpan> value)
        {
            return this.value <= value.Value;
        }

        public bool LessThan(IDataType<DateTime, TimeSpan> value)
        {
            return this.value < value.Value;
        }

        public bool GreaterThanOrEqual(IDataType<DateTime, TimeSpan> value)
        {
            return this.value >= value.Value;
        }

        public bool GreaterThan(IDataType<DateTime, TimeSpan> value)
        {
            return this.value > value.Value;
        }

        public DateTime Value
        {
            get { return this.value; }
        }

        public override string ToString()
        {
            return this.value.ToString();
        }
    }
}
